CN116042007B - Flame-retardant insulating coating for power battery and preparation method thereof - Google Patents
Flame-retardant insulating coating for power battery and preparation method thereof Download PDFInfo
- Publication number
- CN116042007B CN116042007B CN202211709145.XA CN202211709145A CN116042007B CN 116042007 B CN116042007 B CN 116042007B CN 202211709145 A CN202211709145 A CN 202211709145A CN 116042007 B CN116042007 B CN 116042007B
- Authority
- CN
- China
- Prior art keywords
- flame
- component
- parts
- retardant
- power battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003063 flame retardant Substances 0.000 title claims abstract description 124
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 238000000576 coating method Methods 0.000 title claims abstract description 59
- 239000011248 coating agent Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 229920005862 polyol Polymers 0.000 claims abstract description 58
- 150000003077 polyols Chemical class 0.000 claims abstract description 36
- -1 flame-retardant polyol Chemical class 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 239000012948 isocyanate Substances 0.000 claims abstract description 18
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 18
- 235000015112 vegetable and seed oil Nutrition 0.000 claims abstract description 18
- 239000008158 vegetable oil Substances 0.000 claims abstract description 18
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 230000018044 dehydration Effects 0.000 claims description 12
- 238000006297 dehydration reaction Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 229920000728 polyester Polymers 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 9
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 7
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 7
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 7
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 7
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 7
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 7
- 229920000877 Melamine resin Polymers 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 6
- 239000010455 vermiculite Substances 0.000 claims description 6
- 229910052902 vermiculite Inorganic materials 0.000 claims description 6
- 235000019354 vermiculite Nutrition 0.000 claims description 6
- VBIWIGSLGRYEDA-UHFFFAOYSA-N 1,3,5-triethyl-1,3,5-triazinane-2,4,6-trione Chemical compound CCN1C(=O)N(CC)C(=O)N(CC)C1=O VBIWIGSLGRYEDA-UHFFFAOYSA-N 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 4
- 239000013638 trimer Substances 0.000 claims description 4
- OEOIWYCWCDBOPA-UHFFFAOYSA-N 6-methyl-heptanoic acid Chemical compound CC(C)CCCCC(O)=O OEOIWYCWCDBOPA-UHFFFAOYSA-N 0.000 claims description 3
- 244000226021 Anacardium occidentale Species 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 3
- 235000020226 cashew nut Nutrition 0.000 claims description 3
- 239000004359 castor oil Substances 0.000 claims description 3
- 235000019438 castor oil Nutrition 0.000 claims description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 3
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 235000019198 oils Nutrition 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 239000005056 polyisocyanate Substances 0.000 claims description 3
- 229920001228 polyisocyanate Polymers 0.000 claims description 3
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 3
- 235000012424 soybean oil Nutrition 0.000 claims description 3
- 239000003549 soybean oil Substances 0.000 claims description 3
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 3
- ADJMNWKZSCQHPS-UHFFFAOYSA-L zinc;6-methylheptanoate Chemical compound [Zn+2].CC(C)CCCCC([O-])=O.CC(C)CCCCC([O-])=O ADJMNWKZSCQHPS-UHFFFAOYSA-L 0.000 claims description 3
- HIFVAOIJYDXIJG-UHFFFAOYSA-N benzylbenzene;isocyanic acid Chemical class N=C=O.N=C=O.C=1C=CC=CC=1CC1=CC=CC=C1 HIFVAOIJYDXIJG-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 12
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 description 3
- 229920005906 polyester polyol Polymers 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/36—Hydroxylated esters of higher fatty acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/50—Polyethers having heteroatoms other than oxygen
- C08G18/5021—Polyethers having heteroatoms other than oxygen having nitrogen
- C08G18/5054—Polyethers having heteroatoms other than oxygen having nitrogen containing heterocyclic rings having at least one nitrogen atom in the ring
- C08G18/5063—Polyethers having heteroatoms other than oxygen having nitrogen containing heterocyclic rings having at least one nitrogen atom in the ring containing three nitrogen atoms in the ring
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2150/00—Compositions for coatings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention belongs to the technical field of coatings, and particularly relates to a flame-retardant insulating coating for a power battery and a preparation method thereof. The flame-retardant insulating coating for the power battery comprises a component A and a component B; the component A comprises the following raw materials in parts by weight: 50-70 parts of modified vegetable oil polyol, 15-35 parts of flame-retardant polyol, 10-20 parts of flame retardant, 1-5 parts of flame-retardant synergist and 0.02-0.5 part of catalyst; the component B comprises the following raw materials in parts by weight: 40-60 parts of isocyanate curing agent; the flame retardant polyol is a polyol having char forming properties. The flame-retardant insulating coating for the power battery has good insulating effect and excellent flame retardant property, and achieves V-0 grade flame retardance.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a flame-retardant insulating coating for a power battery and a preparation method thereof.
Background
The wrapping of the separator film is an important process step in the production and assembly of the power cell. The film has insulating and flame-retardant properties and has good adhesion with the metal surface. The insulating film separates the battery cells, and the faults of placing single battery cells affect the normal operation of other battery cells. The isolating film used at present mainly adopts a Polyester (PET) substrate, and the surface of the isolating film is coated with acrylic pressure-sensitive adhesive or organic silicon pressure-sensitive adhesive. The molecular structure of the PET material contains a large amount of ester bonds, and the PET is easy to degrade in a warm and humid environment due to the inherent characteristic that the ester bonds are easy to hydrolyze, so that the mechanical property of the PET material is degraded. On the other hand, the PET insulating film coating power battery is complex in process, various defects such as bubbles, folds, uneven edges of the coating film, cracks and the like are easily introduced, the production efficiency of the battery module is affected, and the service performance of the battery pack is affected.
As automotive battery technology evolves from standard 400 volts to higher voltages, future electric vehicles are expected to achieve shorter charging times, longer endurance, and more efficient energy management. The higher voltage battery module means that more demands are put on the insulation, flame retardance and other properties of the material.
Accordingly, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide a flame-retardant insulating coating for a power battery and a preparation method thereof, which are used for solving or improving the problems that the power battery in the prior art has poor insulating or flame-retardant performance, and at least one of the problems that the process of coating the power battery by a polyester insulating film is complex and defects are easy to generate.
In order to achieve the above object, the present invention provides the following technical solutions: a flame-retardant insulating coating for a power battery comprises a component A and a component B; the component A comprises the following raw materials in parts by weight: 50-70 parts of modified vegetable oil polyol, 15-35 parts of flame-retardant polyol, 10-20 parts of flame retardant, 1-5 parts of flame-retardant synergist and 0.02-0.5 part of catalyst; the component B comprises the following raw materials in parts by weight: 40-60 parts of isocyanate curing agent; the flame retardant polyol is a polyol having char forming properties.
Preferably, the modified vegetable oil polyol is at least one of a modified castor oil polyol, a modified soybean oil polyol, and a modified cashew nut shell oil polyol.
Preferably, the flame retardant polyol is a polyester having a molecular structure of triethylol isocyanurate and/or melamine; or the flame-retardant polyol is polyether polyol with a molecular structure of triethyl isocyanurate and/or melamine.
Preferably, the flame retardant is ammonium polyphosphate and/or melamine cyanurate.
Preferably, the flame retardant synergist is expanded vermiculite and/or antimony trioxide.
Preferably, the catalyst is at least one of dibutyltin dilaurate, zinc isooctanoate, bismuth isooctanoate, and triethylenediamine.
Preferably, the isocyanate curing agent is at least one of polyphenyl polymethylene polyisocyanate, carbodiimide modified diphenylmethane diisocyanate, toluene diisocyanate, hexamethylene diisocyanate, and hexamethylene diisocyanate trimer.
The invention also provides a preparation method of the flame-retardant insulating coating for the power battery, which adopts the following technical scheme: the preparation method of the flame-retardant insulating coating for the power battery comprises the following steps of: (1) Uniformly mixing the modified vegetable oil polyol, the flame-retardant polyol, the flame retardant, the flame-retardant synergist and the catalyst to obtain a mixture; (2) And dehydrating the mixture to obtain the component A.
Preferably, the dehydration is performed under vacuum conditions; the dehydration temperature is 105-120 ℃, the dehydration vacuum degree is-0.09-0.1 MPa, and the dehydration time is 1-3h.
Preferably, the method further comprises the step (3): and spraying the component A and the component B on the surface of an object to be constructed through a two-component spray gun.
The beneficial effects are that:
(1) The flame-retardant insulating coating for the power battery has good insulating effect and excellent flame retardant property, and achieves V-0 grade flame retardance.
(2) The flame-retardant insulating coating for the power battery does not contain solvents or halogen-containing flame retardants (the halogen-containing flame retardants generate products such as hydrogen chloride and organic halides when being combusted, and the products are harmful to human bodies), and has the advantages of environmental protection.
(3) The flame-retardant insulating coating for the power battery can be suitable for insulating coatings of power battery modules of electric automobiles, is easy to construct, and is beneficial to improving the protection capability of the battery for short circuits and fires.
(4) The flame-retardant insulating coating for the power battery performs insulation flame-retardant protection on the power battery in a spraying mode, has simple and rapid operation process, and improves the production efficiency.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
The present invention will be described in detail with reference to examples. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
Aiming at least one of the problems that the existing power battery is poor in insulation or flame retardant property, the process of coating the power battery by adopting a polyester insulating film is complex and defects are easy to generate, the invention provides a flame retardant insulating coating for the power battery, which comprises a component A and a component B; the component A comprises the following raw materials in parts by weight: 50-70 parts (e.g., 50 parts, 54 parts, 58 parts, 62 parts, 66 parts, or 70 parts), 15-35 parts (e.g., 15 parts, 18 parts, 21 parts, 24 parts, 27 parts, 30 parts, 32 parts, or 35 parts), 10-20 parts (e.g., 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, or 20 parts) of a flame retardant, 1-5 parts (e.g., 1 part, 2 parts, 3 parts, 4 parts, or 5 parts) of a flame retardant synergist, and 0.02-0.5 parts (e.g., 0.02 parts, 0.05 parts, 0.08 parts, 0.1 parts, 0.2 parts, 0.3 parts, 0.4 parts, or 0.5 parts) of a catalyst; the component B comprises the following raw materials in parts by weight: 40-60 parts (e.g., 40 parts, 42 parts, 44 parts, 46 parts, 48 parts, 50 parts, 52 parts, 54 parts, 56 parts, 58 parts, or 60 parts) of isocyanate curing agent; the flame retardant polyol is a polyol having char forming properties.
The flame-retardant insulating coating for the power battery meets the performance requirement of double-85 aging resistance of the flame-retardant insulating coating for the power battery by adopting modified vegetable oil polyol; the flame-retardant polyol, the flame retardant and the flame-retardant synergist can form a compound synergistic halogen-free intumescent flame-retardant system, so that the coating has good flame-retardant property; the catalyst is mainly used for adjusting the reaction speed of the polyol and the isocyanate curing agent so that the coating has proper curing time.
The flame-retardant insulating coating for the power battery has good insulativity, adhesiveness and flame retardance, and has simple process when being applied to the power battery.
In a preferred embodiment of the present invention, the modified vegetable oil polyol is at least one of a modified castor oil polyol, a modified soybean oil polyol, and a modified cashew nut shell oil polyol.
In a preferred embodiment of the present invention, the flame retardant polyol is a polyol having char forming properties; the flame-retardant polyol is polyester with a molecular structure of triethyl isocyanurate and/or melamine; or, the flame-retardant polyol is a polyether polyol with a molecular structure of triethyl isocyanurate and/or melamine.
In a preferred embodiment of the invention, the flame retardant is ammonium polyphosphate and/or melamine cyanurate.
In a preferred embodiment of the invention, the flame retardant synergist is expanded vermiculite and/or antimony trioxide.
In the flame-retardant insulating coating for the power battery, the vegetable oil polyol has good cohesive force and mechanical strength and good hydrophobicity, and can meet the performance requirement of double-85 ageing resistance of the flame-retardant insulating coating for the power battery; the tri-hydroxyethyl isocyanurate and/or melamine structure in the flame-retardant polyol plays a role of a char forming agent in the combustion process, and is dehydrated to form a foamed carbonized layer under the action of acid; the flame retardant ammonium polyphosphate is decomposed to generate acid compounds in the combustion process, so that the char forming agent forms a charring layer; when the melamine cyanurate is decomposed, ammonia, nitrogen and water are generated, and the concentration of the combustion matters is diluted; the expanded vermiculite expands after being heated, so as to play a role in promoting the formation of a foam carbon layer and stabilizing the foam carbon layer; the antimony trioxide plays a role in promoting the formation of a foamed carbon layer. In summary, a composite synergistic halogen-free intumescent flame retardant system is formed between the flame retardant polyol and the flame retardant synergist.
In a preferred embodiment of the present invention, the catalyst is at least one of dibutyltin dilaurate, zinc isooctanoate, bismuth isooctanoate, and triethylenediamine.
In a preferred embodiment of the present invention, the isocyanate curing agent is at least one of polyphenyl polymethylene polyisocyanate, carbodiimide modified diphenylmethane diisocyanate, toluene diisocyanate, hexamethylene diisocyanate and hexamethylene diisocyanate trimer.
The invention also provides a preparation method of the flame-retardant insulating coating for the power battery, which comprises the following steps: (1) Uniformly mixing modified vegetable oil polyol, flame-retardant polyol, flame retardant, flame-retardant synergist and catalyst to obtain a mixture; and (2) dehydrating the mixture to obtain the component A. By dehydrating the A component, the reaction of moisture in the A component and the isocyanate curing agent is avoided to release carbon dioxide when the moisture is mixed with the isocyanate curing agent, so that bubbles are formed in the coating, and the appearance and the performance of the product are affected.
In a preferred embodiment of the method for preparing a flame retardant insulating coating for a power battery of the present invention, dehydration is performed under vacuum conditions; the dehydration temperature is 105-120 ℃ (e.g. 105 ℃, 108 ℃, 111 ℃, 113 ℃, 115 ℃, 118 ℃ or 120 ℃), the vacuum degree of dehydration is-0.09 to-0.1 MPa (e.g. -0.09MPa, -0.092MPa, -0.094MPa, -0.096MPa, -0.098MPa or-0.1 MPa), and the dehydration time is 1-3h (e.g. 1h, 1.4h, 1.8h, 2.2h, 2.6h, 2.8h or 3 h).
In a preferred embodiment of the method for preparing a flame retardant insulating coating for a power battery of the present invention, further comprising the step (3): and spraying the component A and the component B on the surface of an object to be constructed through a two-component spray gun.
The flame retardant insulating coating for a power battery and the method of preparing the same according to the present invention will be described in detail with reference to specific examples.
Example 1
The flame retardant insulating coating for the power battery of the embodiment includes: the component A and the component B respectively comprise the following raw materials in parts by weight:
and (3) a component A:
and the component B comprises the following components:
isocyanate curing agent: 37.3 parts of polymeric MDI
The component A is prepared by uniformly mixing and dispersing modified vegetable oil polyol, flame retardant synergist and catalyst in proportion, and then heating to 110 ℃ and dehydrating for 2 hours under the environment with the vacuum degree not higher than-0.09 MPa.
When the flame-retardant insulating coating for the power battery of the embodiment is required to be coated on the surface of the power battery, the component A and the component B are respectively filled into a double-component spray gun and sprayed on the surface of the power battery for curing.
Example 2
The flame retardant insulating coating for the power battery of the embodiment includes: the component A and the component B respectively comprise the following raw materials in parts by weight:
and (3) a component A:
and the component B comprises the following components:
isocyanate curing agent: 38.5 parts of polymeric MDI
The component A is prepared by uniformly mixing and dispersing modified vegetable oil polyol, flame retardant synergist and catalyst in proportion, and then heating to 110 ℃ and dehydrating for 2 hours under the environment with the vacuum degree not higher than-0.09 MPa.
When the flame-retardant insulating coating for the power battery of the embodiment is required to be coated on the surface of the power battery, the component A and the component B are respectively filled into a double-component spray gun and sprayed on the surface of the power battery for curing.
Example 3
The flame retardant insulating coating for the power battery of the embodiment includes: the component A and the component B respectively comprise the following raw materials in parts by weight:
and (3) a component A:
and the component B comprises the following components:
isocyanate curing agent: 43.4 parts of polymeric MDI
The component A is prepared by uniformly mixing and dispersing modified vegetable oil polyol, flame retardant synergist and catalyst in proportion, and then heating to 120 ℃ and dehydrating for 2 hours under the environment with the vacuum degree not higher than-0.09 MPa.
When the flame-retardant insulating coating for the power battery of the embodiment is required to be coated on the surface of the power battery, the component A and the component B are respectively filled into a double-component spray gun and sprayed on the surface of the power battery for curing.
Example 4
The flame retardant insulating coating for the power battery of the embodiment includes: the component A and the component B respectively comprise the following raw materials in parts by weight:
and (3) a component A:
and the component B comprises the following components:
isocyanate curing agent: carbodiimide-modified diphenylmethane diisocyanate 52.5 parts hexamethylene diisocyanate trimer 1 part
The component A is prepared by uniformly mixing and dispersing modified vegetable oil polyol, flame retardant synergist and catalyst in proportion, and then heating to 110 ℃ and dehydrating for 2 hours under the environment with the vacuum degree not higher than-0.09 MPa.
When the flame-retardant insulating coating for the power battery of the embodiment is required to be coated on the surface of the power battery, the component A and the component B are respectively filled into a double-component spray gun and sprayed on the surface of the power battery for curing.
Example 5
The flame retardant insulating coating for the power battery of the embodiment includes: the component A and the component B respectively comprise the following raw materials in parts by weight:
and (3) a component A:
and the component B comprises the following components:
isocyanate curing agent: 43.6 parts of polymeric MDI
The component A is prepared by uniformly mixing and dispersing modified vegetable oil polyol, flame retardant synergist and catalyst in proportion, and then heating to 110 ℃ and dehydrating for 2 hours under the environment with the vacuum degree not higher than-0.09 MPa.
When the flame-retardant insulating coating for the power battery of the embodiment is required to be coated on the surface of the power battery, the component A and the component B are respectively filled into a double-component spray gun and sprayed on the surface of the power battery for curing.
Comparative example 1
The flame retardant insulating coating for a power battery of this comparative example includes: the component A and the component B respectively comprise the following raw materials in parts by weight:
and (3) a component A:
and the component B comprises the following components:
isocyanate curing agent: 37.3 parts of polymeric MDI
Wherein, the component A is prepared by uniformly mixing and dispersing the modified vegetable oil polyol, the flame retardant synergist and the catalyst in proportion, and then heating to 105-120 ℃ and dehydrating for 1-3h under the environment with the vacuum degree not higher than-0.09 MPa.
This comparative example differs from example 1 only in that: the flame retardant was replaced by ammonium polyphosphate with the same amount of aluminium hydroxide, all other things being consistent with example 1.
Comparative example 2
This comparative example differs from example 1 only in that: the flame-retardant polyol HDPOL-788 was replaced with the same amount of the ordinary polyester polyol HDPOL-2405 (technical product of Shanghai, hui) and the amount of the isocyanate curing agent was changed from 37.3 parts to 32.2 parts (the amount of the isocyanate curing agent was adjusted according to the selected ordinary polyester polyol, the effect was optimal at the amount), and the rest remained the same as in example 1.
Comparative example 3
This comparative example differs from example 1 only in that: 5 parts of the flame retardant synergist expanded vermiculite was removed, all other things being consistent with example 1.
Experimental example
The performance of the flame retardant insulating coating for power cells and the coating of the comparative example of the present invention was tested, and the test results are shown in table 1 below:
TABLE 1
Note that: tensile strength was tested according to GB/T1408.2-2006 standard; the adhesive force is tested according to the GB/T9286-2021 standard; flame retardant grade is tested according to GB/T2408-2021 standard; resistivity was tested according to the GB/T31838.2-2019 standard; leakage current was carried out according to IEC 60335-1 standard.
As can be seen from table 1: in examples 1-5, the coatings had good tensile strength, surface adhesion, and dual 85 aging resistance properties, while the flame retardant rating was able to reach the V-0 rating of UL94 vertical burning highest. The composite intumescent flame retardant system formed by the modified vegetable oil polyol, the flame retardant and the flame retardant synergist in the flame retardant insulating coating for the power battery has excellent flame retardant effect. In comparative example 1, the flame retardant ammonium polyphosphate was replaced with aluminum hydroxide, and the flame retardant grade of the coating was reduced to V-2 grade because the flame retardant polyol could not be dehydrated to form a foamed flame retardant carbon layer due to the lack of ammonium polyphosphate as an acid source in the system. In comparative example 2, the flame retardant polyol HDPOL-788 was replaced with the ordinary polyester polyol HDPOL-2405, and the flame retardant rating of the coating material was also remarkably reduced to V-2 rating because the material failed to form an effective protective char layer during combustion due to the lack of the polyol having a char-forming structure. In comparative example 3, the flame retardant synergist expanded vermiculite was removed, the foam flame retardant carbon layer formed by the material during combustion was low in strength, unstable in structure, and the flame retardant rating of the coating was also reduced to V-1 rating. The above examples and comparative examples show that the components of the flame retardant insulating coating of the invention have important functions, and the flame retardant insulating coating with good flame retardant effect can be obtained by reasonable formula combination.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The flame-retardant insulating coating for the power battery is characterized by comprising a component A and a component B;
the component A comprises the following raw materials in parts by weight: 50-70 parts of modified vegetable oil polyol, 15-35 parts of flame-retardant polyol, 10-20 parts of flame retardant, 1-5 parts of flame-retardant synergist and 0.02-0.5 part of catalyst;
the component B comprises the following raw materials in parts by weight: 40-60 parts of isocyanate curing agent;
the modified vegetable oil polyol is at least one of modified castor oil polyol, modified soybean oil polyol and modified cashew nut shell oil polyol;
the flame-retardant polyol is polyester with a molecular structure of triethyl isocyanurate and/or melamine; or alternatively, the first and second heat exchangers may be,
the flame-retardant polyol is polyether polyol with a molecular structure of triethyl isocyanurate and/or melamine;
the flame retardant is ammonium polyphosphate;
the flame retardant synergist is expanded vermiculite;
the component A and the component B are used for being sprayed on the surface of an object to be constructed through a two-component spray gun.
2. The flame retardant insulating coating for a power battery according to claim 1, wherein the catalyst is at least one of dibutyltin dilaurate, zinc isooctanoate, bismuth isooctanoate, and triethylenediamine.
3. The flame retardant insulating coating for a power battery according to claim 1, wherein the isocyanate curing agent is at least one of polyphenyl polymethylene polyisocyanate, carbodiimide-modified diphenylmethane diisocyanate, toluene diisocyanate, hexamethylene diisocyanate, and hexamethylene diisocyanate trimer.
4. A method for preparing a flame retardant insulating coating for a power battery according to any one of claims 1 to 3, comprising the steps of:
(1) Uniformly mixing the modified vegetable oil polyol, the flame-retardant polyol, the flame retardant, the flame-retardant synergist and the catalyst to obtain a mixture;
(2) And dehydrating the mixture to obtain the component A.
5. The method for producing a flame retardant insulating coating for a power battery according to claim 4, wherein the dehydration is performed under vacuum conditions;
the dehydration temperature is 105-120 ℃, the dehydration vacuum degree is-0.09-0.1 MPa, and the dehydration time is 1-3h.
6. The method for producing a flame retardant insulating coating for a power battery according to claim 4, further comprising the step (3):
and spraying the component A and the component B on the surface of an object to be constructed through a two-component spray gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211709145.XA CN116042007B (en) | 2022-12-29 | 2022-12-29 | Flame-retardant insulating coating for power battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211709145.XA CN116042007B (en) | 2022-12-29 | 2022-12-29 | Flame-retardant insulating coating for power battery and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116042007A CN116042007A (en) | 2023-05-02 |
| CN116042007B true CN116042007B (en) | 2024-03-19 |
Family
ID=86130827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211709145.XA Active CN116042007B (en) | 2022-12-29 | 2022-12-29 | Flame-retardant insulating coating for power battery and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116042007B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174223A (en) * | 2011-03-15 | 2011-09-07 | 常州大学 | Flame-retardant foamed polyethylene material and preparation method thereof |
| CN102898930A (en) * | 2012-09-21 | 2013-01-30 | 信和新材料股份有限公司 | Hydrocarbon flame resistant intumescent coating and preparation method thereof |
| CN104098998A (en) * | 2014-07-17 | 2014-10-15 | 中科院广州化学有限公司南雄材料生产基地 | Solvent-free polyurethane flame-retardant insulating coating as well as preparation method and application thereof |
| CN112679722A (en) * | 2020-12-28 | 2021-04-20 | 山东一诺威新材料有限公司 | Preparation method of polyether polyol for all-water flame-retardant system |
| CN113717347A (en) * | 2021-09-14 | 2021-11-30 | 上海汇得科技股份有限公司 | Polyurethane foam pouring sealant for battery unit and preparation method thereof |
-
2022
- 2022-12-29 CN CN202211709145.XA patent/CN116042007B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174223A (en) * | 2011-03-15 | 2011-09-07 | 常州大学 | Flame-retardant foamed polyethylene material and preparation method thereof |
| CN102898930A (en) * | 2012-09-21 | 2013-01-30 | 信和新材料股份有限公司 | Hydrocarbon flame resistant intumescent coating and preparation method thereof |
| CN104098998A (en) * | 2014-07-17 | 2014-10-15 | 中科院广州化学有限公司南雄材料生产基地 | Solvent-free polyurethane flame-retardant insulating coating as well as preparation method and application thereof |
| CN112679722A (en) * | 2020-12-28 | 2021-04-20 | 山东一诺威新材料有限公司 | Preparation method of polyether polyol for all-water flame-retardant system |
| CN113717347A (en) * | 2021-09-14 | 2021-11-30 | 上海汇得科技股份有限公司 | Polyurethane foam pouring sealant for battery unit and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116042007A (en) | 2023-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112608707B (en) | Double-component polyurethane structural adhesive and preparation method thereof | |
| CN107629713B (en) | Photovoltaic module busbar insulating tape, busbar and photovoltaic module containing same | |
| CN111499834A (en) | Flame-retardant polyurea anti-explosion protection material and preparation method thereof | |
| CN109251303A (en) | A kind of electrical core of power battery flame resistant heat insulation material | |
| CN111690305A (en) | Electromagnetic shielding flame-retardant material for carbon fiber substrate and preparation method and application thereof | |
| CN103843151B (en) | Solar cell rear surface protective sheet and solar cell module | |
| CN113122124B (en) | Expansion type flame-retardant heat-insulating fireproof coating and preparation method thereof | |
| CN106700428A (en) | Halogen-free resin composition, adhesive and laminated busbar insulating adhesive film prepared therefrom, and preparation method of insulating adhesive film | |
| CN108587508A (en) | A kind of hot melt adhesive film and preparation method thereof of high viscous metal power | |
| CN103555185A (en) | Surface flame retardant coating of rubber as well as preparation method of coating | |
| CN112724358A (en) | Preparation method of waterborne flame-retardant self-repairing polyurethane based on modified graphene | |
| CN107987298B (en) | Flame-retardant electric vehicle plastic shell | |
| CN113881385A (en) | Bi-component polyurethane adhesive for lithium battery aluminum plastic film | |
| CN116004082A (en) | Light solvent-free epoxy intumescent fire retardant coating for automobile power battery packs and energy storage equipment and preparation method thereof | |
| CN115141345A (en) | Anti-aging polyurethane foam material for heat preservation of power battery | |
| CN116042007B (en) | Flame-retardant insulating coating for power battery and preparation method thereof | |
| CN102838779B (en) | Composite expandable flame retardant modified thermosetting resin and preparation method thereof | |
| CN107916056B (en) | Halogen-free flame retardant and flame-retardant polyurea elastomer coating | |
| US20050080218A1 (en) | Highly flame-resistant polyurethane adhesives | |
| CN113416406A (en) | TPU fuel inhibitor and preparation method thereof | |
| CN112480603A (en) | Low-smoke carbon-forming flame retardant and application thereof in preparation of flame-retardant polyurethane elastomer | |
| CN116925632A (en) | Fireproof paint for new energy battery, preparation method of coating and battery | |
| CN113774679B (en) | Low-smoke-toxicity high-oxygen-index solvent-free polyurethane synthetic leather and preparation method and application thereof | |
| CN116178661A (en) | Phosphorus-containing intrinsic flame-retardant resin and preparation method thereof | |
| CN113999620B (en) | Damping low-smoke halogen-free flame-retardant CR foam double faced adhesive tape, preparation and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |